The Niu is a unique mattress concept whose comfort can be personalized for individual needs by flipping the cores. The cores of the Niu are made of 100% organic cotton pocketed coils for added stability. A dual envelope with an anti-humidity cover containing pure Texel virgin wool covered in our organic cotton velour is used. In addition, let’s not forget that the firmness can be adapted and can vary on each side of the mattress to respond to individual needs. The Niu is made with 3 inches of North Malaysia 600 natural rubber plates that cushions the body perfectly. We recommend the use of the S-200 foundation for this model.